Al-Kāfi
Hadith 6922ـ عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ حَمَّادِ بْنِ عُثْمَانَ وَهِشَامِ بْنِ سَالِمٍ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ الْسَّلام) قَالَ كَانَ رَسُولُ الله (صلّى اللهُ عَلَيْهِ وَآلِه) يُكَبِّرُ عَلَى قَوْمٍ خَمْساً وَعَلَى قَوْمٍ آخَرِينَ أَرْبَعاً فَإِذَا كَبَّرَ عَلَى رَجُلٍ أَرْبَعاً اتُّهِمَ يَعْنِي بِالنِّفَاقِ.
2. Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from Hammad ibn ‘Uthman and Hisham ibn Salim who has said the following: “Abu ‘Abd Allah (a.s.), has said that the Messenger of Allah would say five Takbir for certain people, and four Takbir for other groups of people. When he (the Messenger of Allah) would say four Takbir in the Salah (prayer) for a dead man, he (the deceased) was suspected of hypocrisy.”